Error 672 Roomba® Plus 400 and Plus 500 Series

Error 672 on the Roomba® Plus 400 and Plus 500 Series Combo means the grey water dock tank level is too full or the tank is not installed. Please inspect the dirty water tank to see if it needs to be emptied.

1. Ensure the robot is docked properly.
   
   
   
   

2. Remove the dirty water tank and see if there are any obstructions that could be blocking the tank from being fully installed.
   
   
   
   

3. Reinstall the empty dirty water tank.

4. Reboot the dock by unplugging it and plugging it back in again.

5. Try washing the pad again.

If the error persists, please reboot the robot through the app, or by removing the robot from the dock and holding down the power button on the robot for 10 seconds. Hold the button again for 3 seconds to turn it back on. Doing so should clear the error from the robot's memory.

If the error still persists after troubleshooting, please contact iRobot® Customer Care for support.

For expedited service, please have the following ready: 

• Your robot charged and with you 

• Your robot's Serial number

• For warranty claims: Proof of purchase (receipt or invoice for purchase from an authorized retailer)